John 3:33 KJV
He that hath received his testimony hath set to his seal that God is true.
John 3:31–35 KJV Chapter Context
31
He that cometh from above is above all: he that is of the earth is earthly, and speaketh of the earth: he that cometh from heaven is above all.
32
And what he hath seen and heard, that he testifieth; and no man receiveth his testimony.
33
He that hath received his testimony hath set to his seal that God is true.
34
For he whom God hath sent speaketh the words of God: for God giveth not the Spirit by measure unto him.
35
The Father loveth the Son, and hath given all things into his hand.